/*
* Drops a segment file.
*
*/
static void
AppendOnlyCompaction_DropSegmentFile(Relation aorel,
int segno)
{
ItemPointerData persistentTid;
int64 persistentSerialNum;
if (!ReadGpRelationNode(
aorel->rd_node.relNode,
segno,
&persistentTid,
&persistentSerialNum))
{
/* There is nothing to drop */
return;
}
elogif(Debug_appendonly_print_compaction, LOG,
"Drop segment file: segno %d", segno);
MirroredFileSysObj_ScheduleDropAppendOnlyFile(
&aorel->rd_node,
segno,
RelationGetRelationName(aorel),
&persistentTid,
persistentSerialNum);
DeleteGpRelationNodeTuple(aorel, segno);
}
/**
* Drops a segment file.
*
*/
static void
AOCSCompaction_DropSegmentFile(Relation aorel,
int segno)
{
ItemPointerData persistentTid;
int64 persistentSerialNum;
int pseudoSegNo;
int col;
Assert(RelationIsAoCols(aorel));
for (col = 0; col < RelationGetNumberOfAttributes(aorel); col++)
{
pseudoSegNo = (col * AOTupleId_MultiplierSegmentFileNum) + segno;
if (!ReadGpRelationNode(
aorel->rd_rel->reltablespace,
aorel->rd_rel->relfilenode,
pseudoSegNo,
&persistentTid,
&persistentSerialNum))
{
/* There is nothing to drop */
return;
}
elogif(Debug_appendonly_print_compaction, LOG,
"Drop segment file: "
"segno %d",
pseudoSegNo);
MirroredFileSysObj_ScheduleDropAppendOnlyFile(
&aorel->rd_node,
pseudoSegNo,
RelationGetRelationName(aorel),
&persistentTid,
persistentSerialNum);
DeleteGpRelationNodeTuple(aorel,
pseudoSegNo);
}
}